SU1574728A1 - Device for tamping out foundation pit - Google Patents

Abstract

The invention relates to construction, in particular to equipment for the formation of pits for the foundations of buildings and structures. The purpose of the invention is to increase the efficiency of the excavation of the pit. The device for pulling out the excavation pit consists of a hollow body 1, which contains segmental elements 2 in the upper part, and a drummer 9 in the upper part. The segmental elements 2 are connected by flexible inserts 4 to each other, to the upper part of the body, and to a drummer 9. On the inner surface of the segmental elements 2 are fixed gear racks 3. Inside the case there is a vertical rod 6, on which the crosspiece 12 is rigidly fixed with spring-loaded impact elements 13 in contact with the racks 3. At the bottom of the rod 6 is rigidly fixed en tip 7 with anvil 8. The device provides effective sealing not only the bottom of the pit, but also its walls. 2 Il.

Description

FIG. t.

The invention relates to construction, in particular, to equipment for setting up pits for foundations of buildings and structures.

The purpose of the invention is to increase the efficiency of pitting out pits.

FIG. 1 shows the device, a general view, combined with its longitudinal section; in fig. 2 is a section A-A in FIG. -1.

The device consists of a hollow body 1 containing segment elements 2 placed along its forming, on which inner rails 3 are fixed on the inner surface. Along the perimeter segment elements 2 are connected to the body 1 by flexible material 4, for example a conveyor belt. The housing 1 contains vertical channels 5 and a stem b placed at the peak, in the lower part of which the tip 7 is rigidly fixed, the upper part of which contains a smaller diameter anvil 8 that interacts with the hammer 9 of the housing 1. The anvil 8 contains an elastic element 10. To prevent the ground from falling between the housing 1 and the tip 7 around the circumference (or perimeter) of the seal 11 is installed of elastic material. The stem b in the cavity of the housing 1 contains a cross-bar 12 fixed on it, containing spring-loaded rollers or wedges 13 at the free ends, which interact with the toothed racks 3. The length of the toothed racks exceeds the stroke of the rod 6, the upper part of the body contains a hinge-lever mechanism 14, the lower arms of which are in contact with the rod 6. The upper and lower parts of the housing 1 are connected by vertical posts 15. The device is lifted by means of the rod 16.

The device works as follows.

During the pull of 16, the device rises to its original position, while the crosspiece 12 rests on the lower part of the housing 1. The raised device is reset by the tamping point. In contact with the ground of the tip 7, the rod 6 together with the crosspiece 12 moves relative to the housing 1, while the spring-loaded rollers (wedges) 13 move along the rails 3 and, jumping over the tooth, create a series of blows to the segment elements 2,

which create a series of horizontally directed shock waves in the soil adjacent to them, sealing the side walls of the excavation. In contact with the shock 9 with the damping element 10, the housing 1 performs damped oscillations, which also contribute to the compaction of the soil of the walls of the excavation. When lifting the device, the hinged-lever mechanism 14 tears off

the housing 1 from the tip 7, while first rising the housing 1 by the amount of stroke of the rod 6, creating a series of blows of the rollers (wedges) 13 along the segment elements 2. With further movement

upward, the housing 1 rests on the crosspiece 12 and the tip 7 rises in its lowest position, and the whole device rises in this position to the drop height. Then the cycle repeats.

Thus, the device provides an effective seal not only the bottom of the pit, but also its side walls. It does not require (as compared with the prototype) additional drives and energy sources.

to them, and uses part of the impact energy to create a series of shock waves in the walls of the pit. The device is available in manufacturing and provides reliable and high-quality ramming of pits.

Claims (1)

Invention Formula A device for pulling out the trenches, containing a hollow body, vertically housed in the body stem rigidly connected to the tip, mounted on the rod and connected to the body by a hinge-lever mechanism, so as to increase efficiency of ramming of the excavation, it is provided with vertically mounted in the upper part of the body with toothed racks and in the lower part with a drummer placed between the upper part of the body and the lug fixed to the stem with a cross-piece with spring-loaded impact elements and in contact with the toothed racks, the casing being made in the form of sealing segments connected by flexible inserts between each other, the striker and the upper part of the casing, and the toothed rails are fixed on the sealing segments. FIG. 2